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    Mechanics: Efficiency of the Machine

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    A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine?
    a. 92 percent
    b. 94 percent
    c. 96 percent
    d. 97 percent?

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    Solution Summary

    The efficiency of the machine can be found by dividing the useful work by the supplied energy.